1. Words review consume renewable greenhouse Fahrenheit vt. 消费 ; 消耗 ; 耗尽 ; 吃完 adj. 能再生的 ; 可更新的 n. 温室 ; 花房 adj. 华氏的 n. 华氏温度计

2. Unit 4 Global Warming

4. What causes the global warming? Human activity or a random but natural phenomenon?

5. A greenhouse is made of ______ and is used for growing _______, especially during _____ weather. What is a greenhouse made of and used for? glass plants cold

6. Unit 4 Global Warming Reading: The earth is becoming warmer--- but does it matter?

7. 3.What are the two graphs about? Graph 1 shows the temperature increase of one degree Fahrenheit between 1860 to 2000. Graph 2 shows the carbon dioxide content in the atmosphere from 1957 to 2000. Graph 1: Graph 2:

8. Main ideas of each part Part1(1) The background of this article. Part2(2-5) Explanation about how global warming comes about. Part3(6) Part4(7) Two choices of dealing with this problem. Introduce a debate over the issue of global warming Explanation about how global warming comes about. Two different attitudes among scientists towards global warming.

9. Para. 2,3,4 & 5 ① What has caused global warming? Detailed Reading

10. There is no doubt that the earth is becoming warmer and that it is human activity that has caused this global warming rather than a random but natural phenomenon.

11. Human activity: ____________ the ________ of carbon dioxide more ____ will be ______in the atmosphere the increase in the earth’s temperature the burning of fossil fuels result in How has this come about? increase heat energy trapped Para. 3, 4 &5 coal, natural gas &oil evidence from Charles Keeling the greenhouse effect ②

12. Para. 6 Janice Foster& supporters George Hambley& supporters Attitude Temperature increase would be a ___________. We shouldn’t ________. Prediction It could be very _______. Any warming will be _____ with _____ bad environmental consequences. Possible consequence s 1. 2. 3. 4. More carbon dioxide is _________,because __________________ __________________. sea level rise severe storms, floods, droughts, famines the spread of diseases disappearance of species positive mildfew worry serious plants grow quicker  crops produce more  a greater range of animals  human life easier and better Catastrophe

13. A : We shall do something about global warming. B : We shall do nothing about global warming. Debate

14. Agreement & Disagreement Exactly. All right. That ’ s right. That ’ s a good idea. I think so. I couldn ’ t agree more. That ’ s exactly my opinion. I don ’ t think so. I ’ m afraid not. I ’ m afraid I disagree with you. I ’ m afraid I have a different opinion.. I think you are absolutely wrong.

15. Homework: Write a speech to call on people to care our earth